I am trying to invoke a native method from within a java class. The Dll is in the winnt/system32 dir. This works if the class ist run from the commandline. As soon as if i run the same class from within a JSP file, it doesn't work! Sample: <jsp:useBean id="obj" class="my.UseObjects" scope="session"/> <jsp:setProperty name="obj" property="*"/> <html> <head> <title>Untitled</title> </head> <body> <%= obj.invoke("teststring") %> There is an error: Error: 500 Location: /examples/jsp/max/02.jsp Internal Servlet Error: java.lang.IllegalStateException: Response has already been committed What is the reason for this? Is the Tomcat engine not working correctly? Help needed! Herbert =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". Some relevant FAQs on JSP/Servlets can be found at: http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.html http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets